CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Main CFD Forum

Why do we find the approximate solution?

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   February 7, 2007, 21:28
Default Why do we find the approximate solution?
  #1
Meena
Guest
 
Posts: n/a
I have a silly question-

Why do we find out the approximate solutions in various numerical methods , when we already have the exact solution, with which we compare it in order to estimate the error?

Another question is-

What are 'a priori' and 'a posteriori' error? whats the difference between them?

I hope someone helps.

Thanks in anticipation. Meena
  Reply With Quote

Old   February 9, 2007, 11:04
Default Re: Why do we find the approximate solution?
  #2
pc
Guest
 
Posts: n/a
I have a silly answer:

For how many *real* problems of interest do exact solutions actually exist?

Also, 'a priori' = before analysis is performed, 'a posteriori' = afterwards. Nearly every error estimate I've ever seen is a posteriori.
  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to get the solution of last time step? lzgwhy Fluent UDF and Scheme Programming 0 September 15, 2010 22:23
Integration along a line during solution DaRumpel CFX 16 September 2, 2010 11:17
Does FOAM converge to exact solution in Laplace equation? santiagomarquezd OpenFOAM Running, Solving & CFD 0 March 26, 2010 08:52
Doubt on Implicit Methods analyse In India Main CFD Forum 10 March 9, 2007 04:01
Unsteady solution Christophe FLUENT 0 August 11, 2006 11:13


All times are GMT -4. The time now is 18:39.